public class Card {
    public String suit;//花色
    public int rank;//牌面值
    Card(String suit, int rank) {
        this.suit = suit;
        this.rank = rank;
    }

    @Override
    public String toString() {
//        return "Card{" +
//                "suit='" + suit + '\'' +
//                ", rank=" + rank +
//                '}';
        return "{"+suit+rank+"}";
    }
}
